GST is an acronym for "Goods and Services Tax", which is a value added tax which is paid on all goods and services that are liable for the tax in New Zeland. For business GST - the tax is paid to the Inland Revenue Department (of New Zealand) usually on a 1,2 or 6 monthly filing period. For businesses based in New Zealand it is common to fill out a GST Return Form (IRD Form: GST101A). To use this fully mobile responsive New Zealand Goods and Services Tax Calculator (GST) simply enter in a number into the box and push update on the webpage. This will give you all the possible GST scenarios.